除了在查询构建器中使用distinct方法,我们还可以在Eloquent模型中使用distinct方法。下面是一个示例: 代码语言:txt 复制class User extends Model { public function scopeDistinctName($query) { return $query->distinct('name'); } } $users = User::distinctName()->get(); 在上面的示例中,我们定义了一个...
Eloquent will also assume that each table has a primary key column namedid. You may define a$primaryKeyproperty to override this convention. Eloquent 假定每一个数据表中都存在一个命名为id的列作为主键。你可以通过定义一个$primaryKey属性来明确指定一个主键。 时间戳 默认情况下,Eloquent 期望数据表中...
By default, Eloquent will maintain the created_at and updated_at columns on your database table automatically. Simply add these timestamp columns to your table and Eloquent will take care of the rest. If you do not wish for Eloquent to maintain these columns, add the following property to ...
the "snake case", plural name of the class will be used as the table name unless another name is explicitly specified. So, in this case, Eloquent will assume the Flight model stores records in the flights table. You may specify a custom table by defining a table property on your...
If you do not wish to have these columns automatically managed by Eloquent, set the $timestamps property on your model to false:1<?php 2 3namespace App; 4 5use Illuminate\Database\Eloquent\Model; 6 7class Flight extends Model 8{ 9 /** 10 * Indicates if the model should be ...
我第一次寻找所谓的 Laravel 框架的时候,我的其中一个目标就是要找:利用最简单的操作数据库的方法。后来目标就停在了 Eloquent ORM 上。 今天说一说 Eloquent ORM 的一些不易被发现和使用的方法。 1. 递增和递减函数 平时这么写: $article = Article::find($article_id); ...
2. Select only the columns you need Usually to retrieve results from a database table, we would do the following. 1$posts = Post::find(1); //When using eloquent 2$posts = DB::table('posts')->where('id','=',1)->first(); //When using query builder ...
the create method to save a new model in a single line. The inserted model instance will be returned to you from the method. However, before doing so, you will need to specify either a fillable or guardedattributeon the model, as all Eloquent models protect against mass-assignment by ...
Instead of comparing two columns, these methods will compare the column against a value:DB::table('users') ->join('contacts', function ($join) { $join->on('users.id', '=', 'contacts.user_id') ->where('contacts.user_id', '>', 5); }) ->get(); ...
use Illuminate\Database\Eloquent\Model; use Silber\Bouncer\Database\HasRolesAndAbilities; class User extends Model { use HasRolesAndAbilities; } Create an instance of Bouncer: use Silber\Bouncer\Bouncer; $bouncer = Bouncer::create(); // If you are in a request with a current user // that...